Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Idyllwild Weather in September
Idyllwild in September sees high temperatures, with highs around 26°C (79°F) and overnight lows of 11°C (52°F). Overall excellent conditions make it one of the better months to visit.
Rainfall in Idyllwild in September
On average, there are about 3 days with rain during this month, averaging 26 mm (1 in). Showers tend to be short but heavy rather than persistent drizzle. When it rains, it usually means it, but it doesn't last long.
Temperature in Idyllwild in September
If you're visiting Idyllwild in September, expect excellent temperatures with highs of 26°C (79°F) and overnight lows of 11°C (52°F). September is known for being in the summer season. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 11°C (52°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Average water temperature in September
At 20°C (68°F), the water is pleasant for swimming. Most people find this range ideal, cool enough to be refreshing, warm enough to stay in comfortably.If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Idyllwild.
Idyllwild Temperature in September
Min Temperature
11°C (52°F)
Max Temperature
26°C (79°F)
Water Temperature
20°C (68°F) *
Chance of Rain
10%
Precipitation
26 mm (1 in)
Rainy days
3 days
* Data from: Palm Springs, the United States of America (19 KM, 12 Miles).
Idyllwild Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Idyllwild - and find the best time to visit.
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Idyllwild in September
Warm but pleasant conditions in Idyllwild in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Light rain is possible, so consider bringing a small umbrella or rain jacket. The water temperature sits at about 20°C (68°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear.
What To Do in Idyllwild in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling8/10 -
Walking8/10 -
Camping10/10 -
Outdoor sports8/10
Idyllwild 3-Day Forecast
More climate data for Idyllwild
Temperature Rainfall Water Temp
See the full Idyllwild climate overview or explore weather in the United States of America.
Popular in September
Where to go in September - average daytime high across popular destinations.
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Yosemite National Park is definitely worth a visit
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